package com.beiing.tianshuai.tianshuai.widget;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;

import com.beiing.tianshuai.tianshuai.util.DensityUtils;
import com.bumptech.glide.load.resource.gif.GifDrawable;

/**
 * 实现圆角image
 *
 * @author Administrator
 */
public class RoundAngleImageView extends android.support.v7.widget.AppCompatImageView {

    private Paint paint;
    private Context mContext;

    public RoundAngleImageView(Context context) {
        this(context,null);
    }

    public RoundAngleImageView(Context context, AttributeSet attrs) {
        this(context, attrs,0);
    }

    public RoundAngleImageView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        mContext = context;
        paint  = new Paint();
    }

    /**
     * 绘制圆角矩形图片
     * @author se7en
     */
    @Override
    protected void onDraw(Canvas canvas) {
        Drawable drawable = getDrawable();
        if (null != drawable) {
            Bitmap bitmap;
            if (drawable instanceof GifDrawable) {
                bitmap = ((GifDrawable) drawable).getFirstFrame();
            } else {
                bitmap = ((BitmapDrawable) drawable).getBitmap();
            }
            if (bitmap != null) {
                Bitmap b = getRoundBitmap(bitmap, DensityUtils.dp2px(mContext, 3));
                final Rect rectSrc = new Rect(0, 0, b.getWidth(), b.getHeight());
                final Rect rectDest = new Rect(0,0,getWidth(),getHeight());
                paint.reset();
                paint.setAntiAlias(true);
                canvas.drawBitmap(b, rectSrc, rectDest, paint);
                b.recycle();
            } else {
                super.onDraw(canvas);
            }
        } else {
            super.onDraw(canvas);
        }
    }

    /**
     * 获取圆角矩形图片方法
     * @param bitmap
     * @param roundPx 这个属性是设置弧度，一般设置为14，也可以结合实际效果。本例中是30，为了实现明显一点。
     * @return se7en
     */
    private Bitmap getRoundBitmap(Bitmap bitmap, int roundPx) {
        Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
                bitmap.getHeight(), Config.ARGB_8888);
        Canvas canvas = new Canvas(output);
        final int color = 0xff424242;
        final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
        final RectF rectF = new RectF(rect);
        paint.setAntiAlias(true);
        canvas.drawARGB(0, 0, 0, 0);
        paint.setColor(color);
        int x = bitmap.getWidth();
        canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
        canvas.drawBitmap(bitmap, rect, rect, paint);
        return output;
    }
}
